<template>
  <el-flex>
    <el-tooltip
      effect="dark"
      content="Top Left 提示文字"
      placement="top-start">
      <el-button>暗色模式</el-button>
    </el-tooltip>

    <el-tooltip
      effect="light"
      content="Top Center 提示文字"
      placement="top">
      <el-button>亮色模式</el-button>
    </el-tooltip>
  </el-flex>
</template>